Grain-drill.



0. L. FOWLE. GRAIN DRILL.

APPLICATION FILED MAR. 25, 1911.

Patented 0011.7;1913.

s SHEETS-SHEET 1 C. L. FOWLE.

GRAIN DRILL.

APPLICATION FILED MAR.25,1911

Patented Oct. 7, 1913.

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4 JAW G. L. POWLE.

GRAIN DRILL.

APPLICATION FILED MAR. 25, 1911.

Patented Oct. 7, 1913.

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CHARLES In FOW'LE, F DOWAGIAC, MICHIGAN.

GRAIN-DRILL.

Specification of Letters Patent.

Application filed March 25, 1911. Serial No. 616,898.

to grain drills having other styles of fur-- row openers, as, for instance, of the disk type.

The objects of this invention are: First, to provide an improved construction of shoe furrow openers and spring devices. Second, to provide a special connection for the chain coverers in such a device. Third,

to provide in conjunction with spring pressure devices for grain drills, improved spring counterbalance means, which, when the shoes are thrown down, serves to assist in urging the same into the ground, and also to'assist the operator in elevating the sections of shoes. Fourth, to provide in a shoe grain drill, particularly, an improved construction of boot which especially coacts with the rod and spring structure, affording great security for the engagement of the rod springs at the top and a smooth surface over which the same plays in use.

Object-s pertaining to details and econonnes of construction, will definitely appear from the description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claim.

The portions of a grain drill necessary to a clear understanding of my invention in its preferred embodiment are illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a detail perspective view of ,a part of a shoe grain drill with my improvements in place. Fig. II is a detail perspective view of one of the end shoes showing the position of the same when the pressure is applied. Fig. III is an enlarged detail central sectional view from front to rear, through the grain drill shoe and boot illustrated in Figs. I and III, embodying the features of my invention, showing the ,method of constructing the boot and securing the same the shoe. Fig. IV is an enlarged detail sectional view on lines 4-4. of Flg. III, showing further in detail the method of detachably securing the shoe to the boot. Fig. V is an enlarged detail sectional view'on lines 5 5 of Fig. IILshow- 'ing the method of securing the flange to the.

boot. .Fig. VI is a detail view showing the adjustable spring feature for facilitating the operation of the pressure control. Fig. VII shows the coverer features of my invention and the counter-balance as applied to a disk grain drill in which coiled springs are usually made use of for applying'the pressure.

In the drawing, the sectional views are taken looking in the direction of the little arrows atthe ends of the section lines, and -snn1lar. numerals of reference refer toslmilar parts throughout the several views.

Considering the numerals of reference, the sides 1 of theframe of the drill are of angle bars and are secured'to the cross beam 3 to which the shoe draw bars are connected. The carrying wheels 2 are in the usual position. The rock-shaft 4 is at the rear'of'the machine for applying pressure to the shoes or furrow openers, and to elevate the same. The beam 3 is located'above the axle, and the shoes 5 are each connected to a pair of draw bars 6 by means of rivets 7, the draw bars being each pivoted at 8 to a hanger 9. A spreader 28 is between the upper portion of each pair of draw bars, over which the springs 27'act. I

The shoe is made up of a pair of steel plates 10, welded together atjthe bottom, forming an opening at the upper side into which a cast boot-block 11 is secured, the same being flanged at 12 to fit on the upper retained in place by the pivoted bolt 13 having. an eye 15, which swings on the transverse pivot pin 14.- disposed through the shoe plates 10. The bolt l3-extends upwardly througlr the boot-block and is provided with a screw nut 16. This boot-block 11 is provided with a downwardly-projecting guard 18, and has a conduit there through which is a continuation of the boot conduit.

The sheet metal boot 19 is secured by rivets 20 to the upper part ofthe boot-block and delivers-into the conduit 17. A broad washer-like flange 21 is at the upper end of the boot 19 and isretained in place by Patented @ct. 7, i913.

.edge of the shoe plates. This boot-block is outwardlyprojecting lugs 23 beneath the same, and a projecting rib 22 upset above the same, thus making a very smooth boot, with a very broad flange at the top for engaging the rod springs.

Back of the boot-block 11 is a loop 24L, to which the chain coverers 26 are connected. 'lhesecoverers next to the wheels at each side of the grain drill are provided with long arms or links 25 carrying the covering chains 26 at their rear ends.

The rod springs 27 are of the usual construction for a shoe grain drill of this kind, and engage over the spreader 28 and terminate in suitable hooks 29 which engage the upper sides of the draw bars 6, there being a pair for each furrow opener.

Rock shaft arms 30 are secured to the rock shaft 4 by suitable bolts 31, and are connected by the forked links 32 to the rear ends of the springs 27 by the outwardly-projecting pivots 33, A chain 34 connects the rear end of one of the springs 27 to the rear ardly-projecting rigid arms 25, and is of such length that when the rock shaft 4: is rotated to elevate the shoes, it will lift the link or arm 25 upwardly, carrying the covering chain 26 free from the ground during the turning ofthe grain drill. This avoids catching the covering chains under the car- 'rying wheels 2,

4 which frequently results in breakage, and always interferes with the effective operation of the machine in starting.

To facilitate the manipulation of the rock shaft st, 1 provide an arm 38 on the same, which swings below the horizontal when pressure is applied to the shoes by this rock shaft, and which swings above the horizontal when the furrow openers are elevated by the rock shaft.

A forwardly-projecting pitinan 36 is pivoted at 37 to this rock shaft arm and extends through the perforated plate 39 on the beam 3. I int-erpose a strong coiled spring between the plate 39 and the head of the bolt-like pitnian 36. It. will be seen that when this arm 38 is exactly horizontal, the spring has no tendency to rotate the rock shaft 4t. When. however, the rock shaft 4;

is so adjusted that the arm 38 drops below the horizontal, as it does when pressure is applied to the shaft, the spring 35, by its tension, tends to throw the arm downwardly and thereby assists the application of pressure to the shoes. When the arm 38 is thrown above the horizontal, when elevating the furrow opener, the spring 35 exert-s pressure upon the sameto assist the operator in. raising the shoes from the ground.

It will. thus be seen that. the operator, by

means of this device, is greatly assisted in elevating the shoes, and that the spring does not interfere with the effective application of pressure to the shoes or other furrow openers, but assists in the same.

I have thus described my invention as applied to shoe grain drills.

In Fig. VII I show my improvements applied to a grain drill with disk furrow openers. In this structure, the arms 25 are pivoted to the back of the boots of the disk furrow openers. The covering chains 26 are on the ends of the arms 25 and are elevated from the ground when the furrow openers are raised, and are clear from engagement with the carrying wheel of the grain drill exactly as in the other device. The chains 34 are connected to the arms '25 and to the arms on the rear rock shaft. This pressure device is also assisted by the identicalv spring structure illustrated and described in connection with the pressure rock shaft of the shoe drill construction...

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: H

In a grain drill, the combination of the frame, carrying wheels therefor, furrow openers, pressure controlled devices for the said furrow openers, chain furrow coverers at the rear thereof with rearwardly-projecting arms pivoted on the boots to carry said chain furrow coverers; flexibleconnections from the said pressure controlled devices to the rearwardly-projecting arms whereby, when the pressure is relieved and the furrow openers are raised, the chain furrow coverers will be elevated above the ground by said flexible connection, as specified.

l n witness whereof, I have hereunto set my hand and seal in the presence of two wit-- nesses.

CHARLES L. FOlVLE. [n s.]

Witnesses:

Conn 13. ANGLE, Y Rowan!) S. McMAsTnn. 

